<template>
  <div class="my-tab-bar">
  	<div class="tab-item" v-for="(item,index) in arr" :key="index" 
    @click="btn(index,item.componentName)" :class="{current:showIndex===index }">
      <!-- 图标 -->
      <span class="iconfont" :class="item.iconText"></span>
      <!-- 文字 -->
      <span>{{item.text}}</span>
    </div>
  </div>
</template>


<script>
export default {
  props:{
    arr:{
      type:Array,
      required:true,
      validator(value){
        if(value.length<2||value.length>5){
         console.error('长度必须是2-5')
         return false
        }
        return true
      }
    }
  },
  data(){
    return {
      showIndex:0
    }
  },
  methods:{
    btn(index,cName){
    this.showIndex=index,
    // this.$emit('changeCom',cName)
     this.$router.push({
      name:cName
     })
    }
  }
}
</script>

<style lang="less" scoped>
.my-tab-bar {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 50px;
  border-top: 1px solid #ccc;
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: white;
  .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}
    
.current {
  color: #1d7bff;
}
</style>